Improvement in lubricating compounds



UNITED STATES PATENT CFFIOE.

BRIDGET ERENoH, OF ROCHESTER, NEW YOR IMPRQVEMENT IN LUBRICATINGCOMPOUNDS.

Specification forming part of Letters Patent No. 131,264, datedSeptember 10, 1872.

Specification describing a certain Improve ment in LubricatingCompounds, invented by Mrs. BRIDGET FRENCH, of the city of Rochester,county of Monroe and State of New York.

My invention consists of a lubricating compound composed of theingredients hereinafter specified and about inthe proportions named.

' The formula is as follows: Petroleum or other oil, one gallon; tallow,(beef or mutton,) four ounces; bees-wax, one and one-half ounce; soda,one-half ounce. To these elements may be added, if desired, one-halfounce of Glauber or Epsom salts, for the purpose hereinafter stated.This compound is intended more especially for light machinery andbearings, and is therefore made limpid and of a light grade, so that itwill spread and flow easily. It may be made heavier, and be thereforeadapted to heavier machinery, by adding a greater proportion of thetallow or bees-wax, or both. The proportions of any or all the parts maybe somewhat varied without changing the principle. This is necessary inadapting the compound to different kinds of machinery, or to summer andwinter use. The body may be composed of any suitable oil, but I preferpetroleum or the earth oils. The tallow combined with this imparts to itthe proper unctuous character, and also gives the proper density orsolidity. The combination of the tallowand the soda forms soap andsaponifies the mass. Instead of the tallow and soda applied separately,soap itself may be applied in the compound. The bees-wax not onlyincreases the lubricating power, but it incorporates and binds the partsin a more fitting union; and by experiment I find that by its use thesame quantity of the compound will last much lon g er and perform moreservice than if it is not used, the tendency being to hold the materialto the journal and prevent its rapid dissipation. The salts have acooling tendency, and hence are of advantage in summer use. In coldweather they are of less service, andhence I do not wish to confinemyself to their use in the compound. These salts, as well as the tallowand bees-wax, have a tendency to solidify the mass.

I am aware that some of these ingredients have before been used inlubricatingcompounds, but in different combinations, and in differentproportions. In a former patent of my own bees-wax has been employed tohold plumbago in suspension; but in that case a heavy oil is produced,specially adapted to heavy machinery, while in the present case mydesign is to produce a light and limpid oil which can be used on lightmachinery where the other cannot. The ingredients and proportions in mypresent case are different from those in my former patent.

What I claim, and desire to secure by Letters Patent, is-- Thelubricating compound composed of petroleum or other oil, tallow,bees-wax, and soda, either with or without Glauber or Epsom salts, inproportions substantially as named.

' In witness whereof I have hereunto signed my name in the presence oftwo subscribing witnesses.

BRIDGET FRENCH.

' Witnesses:

R. F. OSGOOD, ARCHIE BAINE.

